After graduating from RSAMD, Watson joined Glasgow Citizens' TAG Theatre, before working with Traverse, Borderline, 7:84, Royal Lyceum, Perth Rep and Scottish Theatre Company. Theatre work includes Rob Drummond's Quiz Show, John Byrne's adaptation of Chekhov's The Three Sisters, National Theatre of Scotland's Yer Granny and Douglas Maxwells The Whip Hand. Television work includes Two Doors Down, Only an Excuse?, Bob Servant, Waterloo Road, New Tricks, The Bill, Rab C Nesbitt, City Lights and Naked Video. Film credits include award-winning horror film Let Us Prey, Filth, Solid Geometry, Girl in the Picture and Local Hero.